Arabic → Roman Number Calculator

The Romans had no negative numbers, and could express only a limited range of fractions with numeric symbols, principally the twelfths from 1/12 to 11/12. (The American pound has 16 ounces, but the Roman libra was divided into 12 unciae.)

That means that while any properly-formed Roman number can be expressed in Arabic numbers, the converse is not true. The Arabic → Roman calculator can only handle numbers from 1/12 up through 399,999,999 and 11/12ths. Just put the whole number into the first slot, the twelfths into the second, and click on the button (or press the ‘Enter’ key on your keyboard) to calculate. You may use commas or not, as you please, for whole numbers greater than 1,000.

Translate Arabic Number to Roman:    and 12ths